power plant boiler feed‑water online water quality monitoring system plays a vital role in securing the safe operation of thermal power systems. Excessive dissolved oxygen, pH deviation, conductivity and silica content in boiler feed‑water will easily trigger corrosion and scaling on boiler heating surfaces. These risks may further result in pipeline damage, unit shutdown and other serious production accidents. Traditional manual sampling and laboratory testing features long sampling intervals and delayed data feedback. It cannot capture sudden water‑quality anomalies in real‑time and fails to meet refined management requirements for thermal power plants and waste‑heat power stations.
Dongrun’s power plant boiler feed‑water online water quality monitoring system solution is developed in compliance with electric‑power industry steam‑water standards, with special optimization for feed‑water pipeline sampling conditions.

Core Hardware Composition of Boiler Feed‑water Monitoring System
Thermostatic Sampling Pretreatment Unit for High‑temperature & High‑pressure Working Conditions
The whole system consists of thermostatic sampling pretreatment units, online analytical instruments, data acquisition and early‑warning modules. It continuously monitors key parameters including pH value, conductivity, dissolved oxygen, and silica content. Equipped with pre‑installed cooling, pressure‑reducing, and filtration devices, the pretreatment unit adapts to harsh high‑temperature and high‑pressure feed‑water conditions. It effectively reduces instrument wear and cuts daily maintenance workload for power‑plant staff.
Data Transmission, Alarm and Platform Interconnection Function
Monitoring data from the power plant boiler feed‑water online water quality monitoring system can be uploaded in real‑time to the power‑plant DCS system and environmental‑protection supervision platform. It supports automatic acousto‑optic alarms for over‑limit values, historical curve storage and report export functions. Operation and maintenance personnel can respond in a timely manner once water‑quality fluctuations occur.
Many power‑plant boiler‑related failures originate from unperceived feed‑water quality changes. Timely data feedback helps operators take corrective measures before corrosion or scaling accumulates on thermal equipment.
On‑site Deployment and One‑stop Project Service
This monitoring solution features high equipment integration and convenient installation. Custom measuring‑point layout is supported to match different power‑plant site layouts.
Dongrun delivers full‑range one‑stop services including site survey, complete‑set equipment supply, installation & commissioning, and after‑sales operation & maintenance support. Starting from on‑site investigation and equipment supply to later technical support, the solution controls feedwater quality from the source. It avoids hidden risks of corrosion and scaling for thermal equipment.
With stable continuous monitoring, the power plant can realize energy‑saving benefits and maintain safe production status.
Visit https://www.cndongrun.com/ for further information about Dongrun water‑quality monitoring instruments and system solutions.



